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Split avpicture_fill() in two functions. This will be 

useful for libavfilter and to simplify
avcodec_default_get_buffer().

Originally committed as revision 11942 to svn://svn.ffmpeg.org/ffmpeg/trunk
tags/v0.5
Vitor Sessak 17 years ago
parent
27af15dc5c
commit
cc9853d38f
1 changed files with 104 additions and 68 deletions
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  1. +104
    -68
      libavcodec/imgconvert.c

+ 104
- 68
libavcodec/imgconvert.c View File

@@ -426,17 +426,14 @@ void avcodec_pix_fmt_string (char *buf, int buf_size, int pix_fmt)
);
}

int avpicture_fill(AVPicture *picture, uint8_t *ptr,
int pix_fmt, int width, int height)
int ff_fill_linesize(AVPicture *picture, int pix_fmt, int width)
{
int size, w2, h2, size2;
int w2;
const PixFmtInfo *pinfo;

if(avcodec_check_dimensions(NULL, width, height))
goto fail;
memset(picture->linesize, 0, sizeof(picture->linesize));

pinfo = &pix_fmt_info[pix_fmt];
size = width * height;
switch(pix_fmt) {
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422P:
@@ -449,62 +446,33 @@ int avpicture_fill(AVPicture *picture, uint8_t *ptr,
case PIX_FMT_YUVJ444P:
case PIX_FMT_YUVJ440P:
w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = w2 * h2;
picture->data[0] = ptr;
picture->data[1] = picture->data[0] + size;
picture->data[2] = picture->data[1] + size2;
picture->data[3] = NULL;
picture->linesize[0] = width;
picture->linesize[1] = w2;
picture->linesize[2] = w2;
picture->linesize[3] = 0;
return size + 2 * size2;
break;
case PIX_FMT_YUVA420P:
w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = w2 * h2;
picture->data[0] = ptr;
picture->data[1] = picture->data[0] + size;
picture->data[2] = picture->data[1] + size2;
picture->data[3] = picture->data[1] + size2 + size2;
picture->linesize[0] = width;
picture->linesize[1] = w2;
picture->linesize[2] = w2;
picture->linesize[3] = width;
return 2 * size + 2 * size2;
break;
case PIX_FMT_NV12:
case PIX_FMT_NV21:
w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = w2 * h2 * 2;
picture->data[0] = ptr;
picture->data[1] = picture->data[0] + size;
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = width;
picture->linesize[1] = w2;
picture->linesize[2] = 0;
picture->linesize[3] = 0;
return size + 2 * size2;
break;
case PIX_FMT_RGB24:
case PIX_FMT_BGR24:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = width * 3;
return size * 3;
break;
case PIX_FMT_RGB32:
case PIX_FMT_BGR32:
case PIX_FMT_RGB32_1:
case PIX_FMT_BGR32_1:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = width * 4;
return size * 4;
break;
case PIX_FMT_GRAY16BE:
case PIX_FMT_GRAY16LE:
case PIX_FMT_BGR555:
@@ -512,64 +480,119 @@ int avpicture_fill(AVPicture *picture, uint8_t *ptr,
case PIX_FMT_RGB555:
case PIX_FMT_RGB565:
case PIX_FMT_YUYV422:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = width * 2;
return size * 2;
break;
case PIX_FMT_UYVY422:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = width * 2;
return size * 2;
break;
case PIX_FMT_UYYVYY411:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = width + width/2;
return size + size/2;
break;
case PIX_FMT_RGB8:
case PIX_FMT_BGR8:
case PIX_FMT_RGB4_BYTE:
case PIX_FMT_BGR4_BYTE:
case PIX_FMT_GRAY8:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = width;
return size;
break;
case PIX_FMT_RGB4:
case PIX_FMT_BGR4:
picture->linesize[0] = width / 2;
break;
case PIX_FMT_MONOWHITE:
case PIX_FMT_MONOBLACK:
picture->linesize[0] = (width + 7) >> 3;
break;
case PIX_FMT_PAL8:
picture->linesize[0] = width;
picture->linesize[1] = 4;
break;
default:
return -1;
}
return 0;
}

int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, int pix_fmt,
int height)
{
int size, h2, size2;
const PixFmtInfo *pinfo;

pinfo = &pix_fmt_info[pix_fmt];
size = picture->linesize[0] * height;
switch(pix_fmt) {
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV444P:
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
case PIX_FMT_YUV440P:
case PIX_FMT_YUVJ420P:
case PIX_FMT_YUVJ422P:
case PIX_FMT_YUVJ444P:
case PIX_FMT_YUVJ440P:
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = picture->linesize[1] * h2;
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[1] = picture->data[0] + size;
picture->data[2] = picture->data[1] + size2;
picture->data[3] = NULL;
return size + 2 * size2;
case PIX_FMT_YUVA420P:
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = picture->linesize[1] * h2;
picture->data[0] = ptr;
picture->data[1] = picture->data[0] + size;
picture->data[2] = picture->data[1] + size2;
picture->data[3] = picture->data[1] + size2 + size2;
return 2 * size + 2 * size2;
case PIX_FMT_NV12:
case PIX_FMT_NV21:
h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
size2 = picture->linesize[1] * h2 * 2;
picture->data[0] = ptr;
picture->data[1] = picture->data[0] + size;
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = width / 2;
return size / 2;
return size + 2 * size2;
case PIX_FMT_RGB24:
case PIX_FMT_BGR24:
case PIX_FMT_RGB32:
case PIX_FMT_BGR32:
case PIX_FMT_RGB32_1:
case PIX_FMT_BGR32_1:
case PIX_FMT_GRAY16BE:
case PIX_FMT_GRAY16LE:
case PIX_FMT_BGR555:
case PIX_FMT_BGR565:
case PIX_FMT_RGB555:
case PIX_FMT_RGB565:
case PIX_FMT_YUYV422:
case PIX_FMT_UYVY422:
case PIX_FMT_UYYVYY411:
case PIX_FMT_RGB8:
case PIX_FMT_BGR8:
case PIX_FMT_RGB4_BYTE:
case PIX_FMT_BGR4_BYTE:
case PIX_FMT_GRAY8:
case PIX_FMT_RGB4:
case PIX_FMT_BGR4:
case PIX_FMT_MONOWHITE:
case PIX_FMT_MONOBLACK:
picture->data[0] = ptr;
picture->data[1] = NULL;
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = (width + 7) >> 3;
return picture->linesize[0] * height;
return size;
case PIX_FMT_PAL8:
size2 = (size + 3) & ~3;
picture->data[0] = ptr;
picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
picture->data[2] = NULL;
picture->data[3] = NULL;
picture->linesize[0] = width;
picture->linesize[1] = 4;
return size2 + 256 * 4;
default:
fail:
picture->data[0] = NULL;
picture->data[1] = NULL;
picture->data[2] = NULL;
@@ -578,6 +601,19 @@ fail:
}
}

int avpicture_fill(AVPicture *picture, uint8_t *ptr,
int pix_fmt, int width, int height)
{

if(avcodec_check_dimensions(NULL, width, height))
return -1;

if (avpicture_fill_linesize(picture, pix_fmt, width))
return -1;

return avpicture_fill_pointer(picture, ptr, pix_fmt, height);
}

int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
unsigned char *dest, int dest_size)
{


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